function getStyle(obj, name) {
	if (obj.currentStyle) {
		return obj.currentStyle[name];
	}
	else {
		return getComputedStyle(obj, false)[name];
	}
}

function startMove(obj, attr, iTarget) {
	if (obj.timer != null) {

		clearInterval(obj.timer);
	}
	obj.timer = setInterval(function () {
		var cur = 0;
		if (attr == "opacity") {
			cur = Math.round(parseFloat(getStyle(obj, attr)) * 100);
		} else {
			cur = parseInt(getStyle(obj, attr));
		}
		var speed = (iTarget - cur) / 6;
		speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);
		if (cur == iTarget) {
			clearInterval(obj.timer);
		} else {
			if (attr == "opacity") {
				obj.style.filter = "alpha(opacity:" + (cur + speed) + ")";
				obj.style.opacity = (cur + speed) / 100;

			}
			else {
				obj.style[attr] = cur + speed + "px";
			}
		}
	}, 30)

}

